Setup IPSec Tunnel between 2 UltraSAM Modems

Introduction

IPSec provides a secure and reliable connection between two different LANs via the static IP address on the WAN. The connection is secured by tunneling protocol and a Pre-Shared Key (password) is provided to secure the connection.

The procedure below details the setup parameters using two UltraSAM modems.

Architecture

Where:

LAN 1: First  UltraSAM (GW IP: 192.168.1.1)

LAN 2: Second UltraSAM (GW IP: 192.168.2.1)

Requirements:

Both UltraSAMs have SIM cards with either:

1. Public Static IP Address
2. Private Static IP address on the SAME VPN (i.e. APN=telstra.corp)

UltraSAM Details:

Platform :               UltraSAM3TG

FW Version:           SAM-OS v1.0.3

Platform :               UltraSAM4W

FW Version :          SAM-OS v0.0.9

Setup Procedure

1. Ensure both modems are connected to 3G/4G network by entering correct APN. Your wireless network provider should allocated public ip address for each for them.

(modem 1 with highlighted public ip address)

(modem 2 with highlighted public ip address)

2. Ensure that Firewall rule is enabled on both modems. Navigate to System –> Firewall and tick “Enable” and save.

3. On modem 2, navigate to Internet Settings –> LAN –> Local IP Setting and change the modem 2 Ethernet IP address to 192.168.2.1 and save.

Wait for a moment and you modem 2 will be on 192.168.2.1. Open the modem configuration web page on 192.168.2.1.

4. On modem 1, navigate to Advanced Setting –> VPN –> IPSec to add IPSec. Please check the screenshot below.

5. On modem 2, navigate to Advanced Setting –> VPN –> IPSec to add IPSec. Please check the screenshot below.

6. Wait for 5 – 10 minutes until IPSec tunnel is established.

7. You will be able to see the IPSec summary page on the status

8. And you should be able to visit both modems from any computer within modem 1 or modem 2 LAN.

9. Change the default modem login password to make the network secure.